Atsuto Suzuki
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Geo-neutrinos after KamLAND : 2FK : 40K Detection
Geo-neutrinos after KamLAND : 2FK : 40K Detection
8B
pp
pep
hep
7Be
7Be N
OF
reactorat Kamiokareactorat Kamioka
UU
ThTh
KK
neutrino-electron elastic scattering
ne + p e+ + n
Geoneutrinos after KamLAND : 3:
Directionality Measurement
Geoneutrinos after KamLAND : 3:
Directionality MeasurementFCrust , FMantle , FCoreFCrust , FMantle , FCore
inverse b – decay reaction : 1st stepinverse b – decay reaction : 1st step
How to Measure DirectionHow to Measure Direction
ne
p
e+g
gDrreconstruct
Drreconstruct (cm)Drreconstruct (cm)
En = 2.5 MeV
inverse b – decay reaction : 2nd stepinverse b – decay reaction : 2nd step
How to Measure DirectionHow to Measure Direction
ne
p
e+
n q
En = 2.5 MeV
cos q
inverse b – decay reaction : 3rd stepinverse b – decay reaction : 3rd step
How to Measure DirectionHow to Measure Direction
ne
p
e+
n q*
g
X
cos q*
En = 2.5 MeV
ne + p e+ + nne + p e+ + n
n + A A* n + A A* + a and/or bw/o g’s + a and/or bw/o g’s
new liquid scintillator
still dream
Hawaii : Highway to the HeavenHawaii : Highway to the Heaven
Hawaii : Highway to the MantleHawaii : Highway to the Mantle